It took me a good a month to really get the hang of it. I use coconut and almond flour in baking recipes in place of regular flour. Sometimes you can find them at walmart, they are always at Whole Food/organic health food stores. I usually take a food/recipe I like to make and google it with the word "Paleo" after it and almost always come up with some recipes. Also try looking up Paleo or clean eating on Pinterest. Both Lara Bars and Kind bars have some Paleo friendly options, so I use those as 'fillers' when im hungry and don't feel like thinking too hard about what to eat.
Here are a couple recipes I like:

chocolate chip cookies:
http://www.freecoconutrecipes.com/index.cfm/2009/10/3/Coconut-Flour-Chocolate-Chip-Cookies (you can always substitute honey for the sugar)

spicy coconut chicken (my husband loooved this):
http://www.bakeat350goessavory.com/2011/11/chicken-with-spicy-coconut-sauce.html

Tuna cakes (taste like the ones my mom makes but lighter/healthier):
http://dishesanddishes.wordpress.com/2012/03/21/paleo-tuna-cakes/

Sweet Potato Fries (I don't use sugar on them)
http://www.simplyrecipes.com/recipes/oven_baked_sweet_potato_fries/

My favorite way to eat fresh green beans (I don't add cheese)
http://www.skinnytaste.com/2011/11/roasted-parmesan-green-beans.html

Our favorite way to still have "fried chicken/chicken nuggets" these are tastey, filling, and high in calories
http://www.multiplydelicious.com/thefood/2011/09/coconut-chicken-nuggets-with-paleo-bbq-sauce/

This is a good/quick reference quide:
http://backonpointe.tumblr.com/post/23691039431/eatingforidiots-the-only-foods-you-ever-need-to

Good luck!

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