I'd like to gain some weight while working out if that makes sense.
Makes complete sense man, you're looking to bulk up and gain some weight.
You can google workouts of such things since I'm not sure how advanced you are and how much you've lifted and what not. But if you're just beginning, I would get into the dumbells and get acclimated with those.
Once you feel comfortable with higher weights, move onto the free weights with bars from certain lifts, don't completely abandon dumbells cause you can use those for every single workout.
I would check out these 2 following websites once you get comfortable to decide what types of workouts you want to do. I give you these workouts because there are so many variations you can put in and what not that they help you through it.
http://www.bodybuilding.com/fun/workout.htm
http://musclepharm.com/athletes/ You gotta register for this one but well worth it.
I follow buff dude's website and their workout program. I'm currently off it since I will be having surgery soon so can't really workout.
You also need to increase protein intake and higher calorie meals. Stick to steaks and chickens and some tuna for the meat. I can go into more detail if you'd like and give you what to eat and what not during the day but that's something you can google and they have personalized meal plans that will help you. Google "Bulking Meal Plan Bodybuilding" and there should be many results!
Also, if you're looking to get serious, i would get on some proteins such as creatine or BCAA's and stuff like that. I can help more with that as well since I can go on and on with what you could take so if you need some more specific help, hit me up. I would start with a whey protein and a preworkout then could possibly move onto more in depth proteins and such.
Lemme know if you have any more questions.