Upgrading 7.2 to 8.1

Hello from Ireland! I have been following some of the discussions on this site for some time, but much of it is beyond my current skill level. I am quite interested in the alternatives to to the Big M though. However, I do run a file and samba server in 7.2 and would like to move to 8.1 which I have. It seem that it should be pretty straightforward in the documentation. Is there anything special to be aware of in the upgrade? Thanks for any help! Michael Reaume IT Coordinator St. Laurence College Loughlinstown Dublin 18 Ireland Tel: +353 1 2043077