You've got this. Just keep putting one foot in front of the other, man.

For cooking, if you can follow directions, you should be able to get this handled in no time. Start with the basics: learn (and practice!) the different ways to cook an egg, make rice, grill chicken breast, etc. Get the basics down until they are second nature, and then you can be fully confident that no matter what you'll at least be able to feed yourself a healthy diet. From there you can start branching out and experimenting with recipes. What I did was experiment a lot until I found a bunch of stuff I liked, and then commited 6 of my favorite recipes to memory (two for each meal of the day, breakfast/lunch/dinner) so that no matter what I can buy those ingredients and make those meals without needing to consult the recipe. Utlimately you will find yourself in the position of cooking for a woman or a friend, and it's awesome to be able to bust it all out without needing to read :)

As for fliriting and pursuing women... put that on the backburner and just practice talking with people in general. Serious. Don't even worry about getting numbers or any of that, just put it completely out of your mind for now. Practice interacting with everyday people: the cashier at the grocery store, the clerk at the gas station, etc. It'll do wonders for your basic conversational confidence.

And delete the porn folder, man. You know that you need to... so just scrap it, and scrap it for real (no leaving it in the recycle bin...). I personally never collected porn on my hard drive, but I did keep a folder of favorite links in my bookmarks. Just like you I justified keeping it around forever until I just said FUCK IT, deleted it, made sure it was gone... and it was a huge relief. There was a few minutes of "damnit, can't believe I just did that," but after those few minutes I was over it and never thought about it again. Just proved that it was all worthless anyway.

Keep moving forward.