Q:
Returning after a year of not playing..
A:
Before transferring, you might try to find the guild. If you think it were better to transfer, seek for EU guilds and ask to join. Yes, guilds can have members from both regions now. You cannot meet ‘in person’ or do things together at that point. Hang in the Guild Chat and get to know the people. If you feel that you fit in well, then you may wish to invest in transferring. Also do the same in NA.
Some guilds can be found here: https://forum-en.gw2archive.eu/forum/community/lookingfor