Munchies:
Don't eat mostly junk. - It's made to be addicting and is very good at fattening. Eat normal food, but it larger portions
i think this is the best advice i have seen on this site, honestly lol!
my gain started as my partner at the time was teaching me to really enjoy the indulgence of good food (and drink). i gained my first 60 lbs eating a lot of really great food (and drinking a lot of excellent and exotic beer and wine).
not only can you get fat eating healthier, better food, you can enjoy the experience - not just in watching the scale numbers go up, if that is your goal, but also just in the experience of taste, texture and flavours of delectable meals. become a slave to my desire to try more, to taste more, probably was the biggest shift for me.
when i was a gym rat i ate very lean, very sparse meals. and they were often very dull, too! now that i am a fatty, i find myself looking forward to different dishes and restaurants all day long. i still eat my fair share of junk (trying to cut down on it though). but there is soooo much more enjoyment in good food!