Just get a lighter foundation. Since you're new to make up, I suggest walking up to a MAC counter at a department store and asking to be color matched. MAC's coloring system is the same for all their products and so many people use their concealers and foundations, it's easier to google what the right shade for any given product.
You also need to know your skin type: oily, dry, normal (no part of your face is excessively oily or dry), or combination (for example, your nose and forehead might be extremely oily but your cheeks might have dry patches). I have oily skin and I really like Revlon Colorstay for Combination/Oily skin. It has heavy coverage, almost nonexistent spf, and has a matte finish, which is great for photos. However if you have dry skin, it might be too mattifying for you. Once you know your skin type, search for foundations that are good for photography and your skin type. It's easier if you find a youtuber who has the same skin type and see if they have a tutorial for photography makeup.
Once you find a foundation you think might be good to try, look it up on findation.com. You can enter the brand, product, and color and it'll tell you which foundations from other brands will match. Then when you go and get your foundation, just pick a color that's one or two shades lighter than the one that's your color.
As for application, check out this video
. She also has tips on what you should look for in foundations, how to choose the right shade, and other things totally revolving around foundation.
Foundation is meant to even out the skin tone, not to cover up blemishes or imperfections. For that, you'll need a concealer. Once you get your foundation, it might help to bring it with you when you shop around for concealer (at least if you go to the drugstore).