Newbie here!

So hi all! I'm new to MFP as I've seen it when I've been lurking around. I literally signed up today, and I just signed myself up for a personal trainer at my gym. I think that I'll mostly be using the app/website as a way to log my food, because my trainer wants me to keep track of everything I eat and such. I've been through weightloss struggles and success a lot in my short life on this earth. I've gotten to my goal weight before, gained it all back, lost some more, gained it back again, blah, blah, blah. So anyway, I'm 24, at my heaviest I've ever been and decided that this was going to be the last time that I would ever see that number on the scale. I'd appreciate any new friends or recommendations that anyone could offer.