Not sure if this topic is taking non-USA Era folks but if it is here we go.
I remember earning the right to vote, just three days after a general election in 2005, but voted in the first local elections after that. Sadly for the life of me I can't remember who it was I voted for, so it may have been some horrible nutjob who I didn't do any research on.
After that I tended to vote Labour, Green and Lib Dem for councillor positions.
In general elections it went
2010: Liberal Democrat - I wanted them to pass an Alternative Voting System of some kind, and was intially pleased with the coalition as the referendum was happening. And then the results of that happened. It pisses me off to this day that people had an opportunity to change a crappy electoral system and didn't do it but were happy to vote to leave the EU.
2015: Green Party - I tend to agree with obviously a lot of their environmental positions, plus the removal of the homeopathy stuff was good. I liked Caroline Lucas as a politician as well, the policies on greater taxes towards the wealthy, including the so-called Tobin Tax sounded nice along with removing the House Of Lords with a second fully elected chamber. While my position on nuclear energy has changed a bit since this election if the Greens were more viable in a general election they could get my vote if I liked the candidate. Haven't been keeping up to date on them for a while now so they could be in a horrible shitstorm for all I know.
2017: Labour Party. Voted to keep the Labour MP in my area, I felt he was doing a good job and given our crummy voting system he was the only choice I could reasonably make.
As for future voting plans, no bloody clue over here, guess it's going to be the most viable progressive in my area.