Everyone starts somewhere! If you've never done any scrapping it can feel overwhelming but if this is something you're interested in the best thing you can do is dive in. Read through the forum, a good topic to look at is
here and be sure to check the pinned topics in each section.
Be sure to take good, well lit pictures that don't have too much glare. If you have to take pictures one board at a time that's fine. Using the numbers in the pictures is a great way to keep things organized on here!
1, looks like some kind of gold finger card, from the angle I'm not sure if anything would prevent it from clean gfc category
2, is also a gold finger card but has a heatsink and bracket, which can be removed for the better paying category
3, also appears to be gold finger card but again the picture isn't great
4, likely a high peripheral board but the large aluminum heatsink needs to be removed
5, low grade, if you have the time and want to remove anything to scrap locally that's the board to do it to