Hey there clout! Welcome, welcome, welcome to the forum! You seem like a normal, 21 year old, ‘you just like women!’ 
You found THE Perfect place to find in depth information on everything to do with mones. You’ll notice there are many people trying out mones, posting on their journals but also, as this is a research forum, you’ll get much more on the scientific side of things… How did you find this site, BTW?
Will wearing your own cologne/deodorant in combination with pheromones disrupt the effect of its use?
No… with a caviat. You can use your cologne and the mones at the same time. Just the same application point on your skin, I’d suggest you use your cologne, let it dry down, then apply your mone product. Better yet, try another point of skin. Deodorant doesn’t matter, as it’s not recommended to use mones in your armpits!
How are you technically supposed to use the pheromones to have a successful affect?
Basically, you can do what’s called finding your ‘sweet’ spot. Which is, in what quantity of mones do you get the most success in self effects and effects on others.
For both of these questions and more… take a look at my sig below on Intro to Mones by Steve O. Very indepth, long, but worth it! I put my sig together thinking of new ones learning about mones. I wish I would have had that guidance when I first started out and wish you well in your mone adventures!!!
Also, for the AD mones that you can use, take a look at P51’s Awesome overview on mones so you can get a better handle on what they do. We can post our experiences with those that you decide to get.
When you say, better love life, does that mean you’re already in a LTR??