Hi there,
it seems that you have got a lot of good tips for shooting photos. I have been there where you are now. My first DSLR was *ist Ds. And I used mostly kit lens or cheap manual lenses with it. most of time I used it in green mode or AV mode. with manual lenses it was easy to use 'green' button, which was Av button at back. Just to try to get exposure right. I did not care too much of f stops, just enough to have some Dof or less.
When I did not get exposure right(like most of time), I learned how to make better exposure with +/- compensation and/or cameras spot metering instead of full metering. so I pointed camera at middle of brightest and darkest area and got metering from there. IF shutter time was tooslow I had to bump up ISO to make faster shutter time. Or just use tripod(which I have learned to carry along...after many attempts).
When I got better with this - after thousands and thousands pictures, yai digital camera, it costs noting to try..- I could concentrate more with framing the shot and looking what I wan't to shoot. Still I shoot many shots, just to make sure IF I got the shot.and to try different point of view(PoV) ect. that makes it fun for me. bad shots I erase at shooting place. Interesting ones I keep to look at home and see what I got.
then we enter in great world of post processing...not in the annoying world of pixel peeping, which can ruin your fun of experimenting.
So all in all, have fun, try to look for framing and try different f stops and shutter times on same interesting subject. Get tripod. and thing how the knowledge that you have on f-stops really affects on images. remember to look your subject from higher and lower point of view. first of all look before you shoot.