Extension service in Serbia is well defined under the set of laws and regulation, covering all important aspects of advisory works such as service provision, training and licencing. It also authorises the Institute for Science Application in Agriculture (ISAA/IPN) to perform such activities. ISAA has been preparing annual training plans (ATPs) and implementing the trainings since 2010. In this paper we will analyse training period 2010-2011 and increase in advisors' knowledge in economic and advisory/extension skills. The training of advisors is structured upon 3 axes: knowledge increase - knowledge not covered by academic education; knowledge update - innovative technologies and practices in the field of agriculture; and advisory skills acquisition, i.e. applied knowledge, advisory techniques and 'soft' skills. Agricultural advisors in the period from 2010 to 2015, within the IPN's annual training programme, have been educated through more than 40 different modules. Trainings organized by ISAA/IPN were attended by more than 14,000 agricultural experts: mostly extension agents, but also experts from farmers' associations, local government, Rural Development Centres, non-governmental organizations (NGOs) as well as farmers. Educations have been performed by eminent experts and professors from various universities from the USA and the European Union (EU), as well as experts from different Serbian faculties and institutes. More than 80% of the trainees have responded that the trainings did meet their needs, making it very useful for them. Meanwhile 53% of the trainees have identified the "Farm management" module as a module with the greatest impact/importance to their work, followed by the "EU Integration" module and "Extension Skills". A minimum level of knowledge after the trainings has been assessed as 'good'. About a half of participants (49%) said they could fully participate on all the important issues during the trainings.