Here's a brief summary that's been posted elsewhere of full-fledged anarchist communism, though most elements of it are adaptable to any form of libertarian socialism:
Public control without a state would essentially function through a federation of voluntary communes and syndicates that are democratically managed through participatory committees and workers councils. This would mean placing emphasis on grassroots neighborhood committees, community assemblies and other direct democratic associations rather than the centralized state.
Instead of a top-down, centralized governance system, an anarchist society would function using a bottom-up, decentralized governance system.
Neighborhood assemblies would be open to the general public, and these assemblies will be the primary (and final) governors of public policy in their jurisdiction. Public policy would be determined by direct democratic means, and delegates would be assigned to deal with the task of public policy administration. These delegates would be recallable at any time by a direct democratic vote, as opposed to the current dictatorial political system.
Various sections and aspects of the Paris Commune are an illustrative example of this sort of direct democracy in action.
Workers councils would be specifically intended to address workers needs and concerns, and would determine workplace management and administration through direct democracy, again. Control of the means of production would be granted to both these democratically managed workers councils, as well as to the citizens of the locality, if some of the workers are not both. The community assemblies would primarily serve as complementary features of workers councils for citizens who do not perform conventional work (such as parents with small children, the elderly, the disabled, the sick, etc.)
If the communitys industrial aspects are properly and efficiently managed through direct democracy, this would result in increased benefits for the workers and surrounding community. The workers themselves would be able to distribute and delegate work tasks and administration evenly among themselves, and thus form a far more efficient workforce, resulting in increased production levels and benefits, as well as decreased work hours and shortages.
Soviets initially functioned this way, until the Bolsheviks began to forcefully collectivize land and resources, and delegated control of the means of production to high-level bureaucrats rather than workers.
Through community and industrial unionism, decisions regarding the means of production and public policy affecting the wider community could be made in an efficient, direct democratic manner.
Communes would function as free, voluntary associations that would not force citizens to work or govern. Participatory committees would be freely joined and democratically managed, as opposed to the current situation, when all are forced to either work or die, because of the system of wage slavery that exists. An ideal commune would grant the minimal means of life even to those who were able but not willing to work. They would not grant them nonessential public services, however, unless they chose to participate in the work and management of the commune. As for those who were unable to work, they would still be granted full public services, as well as be permitted to have some degree of participation through community assemblies.
In the workplace itself, hierarchical authority structures would be dismantled in favor of direct democratic management. Policy creation would be given to the workers councils, and specific delegates and workers would be assigned to manage specific policy administrations, as is the case with the community assemblies. No longer would a separation between labor and management exist. The laborers would be the managers. Separate groups of order-givers and order-takers would no longer exist, and positions that solely emphasized management would not exist, as they would be useless and unnecessary. Through these methods, the workplace would not only function more democratically, it would function more efficiently, as workers are more intimately familiar with the conditions of the workplace than distant, unassociated managers are, and would be better qualified and capable to manage it properly.
The neighborhood and community assemblies would be the other segment of participatory committees to manage society as a whole. Towns and cities would essentially be formed from smaller neighborhood assemblies, which in turn would be federated at the regional and national levels in order to provide collective benefits to all involved. (The participatory committees would remain autonomous, of course, and could secede from larger federations if its member saw fit.) The assemblies would primarily address governance at the local level, and would ensure that all community members were provided with sufficient public services such as food, housing, healthcare, transportation, communication, etc. If there were councils or delegates that managed these assemblies, they would not possess an executive or bureaucratic status, and would primarily be intended to address specific facets of policy administration that would be too cumbersome and inefficient for management by the wider assembly.
Assemblies would be summoned on a regular basis, as often as required or necessitated by communal interests and issues, upon the request of the communal council or the consensus of the inhabitants of the local community. Local inhabitants would deliberate and address local issues and problems, and implement direct democratic management techniques in order to address them, possibly appointing additional councils or delegates in order to address them.
Lower levels of assemblies would maintain control over higher levels, thus reversing the unjust infliction of hierarchical, top-down authority structures.
Anarcho-communism fundamentally seeks to abolish and dismantle hierarchical, authoritarian relationships, both in the social and economic realms. Communism would be implemented from the bottom-up, not the top-down. In this manner, it would be based on free association, not on forced collectivization. True and legitimate communism can never be coercive.