More tomato problems? Help!

[gryffin]

I'm finding some more potential problems with my tomato plants. I'm a complete novice about trying to identify what the problem is- so many things look alike. I've tried the Cornell site and some web searches, but I'm confused. I'm also overwhelmed by the number of plants showing issues all at once and can't figure out how to prioritize them.

Here are some pictures of different things I'm seeing on different plants. Any advice or input is appreciated.

Plant #1: Old bottom leaves turning yellow


Plant #2: Leaves turning yellow, some brown spots on bottoms of leaves


Plant #3: Branches with dry green curling leaves, one shriveled and dark brown dry leaf (2 pictures)



Plant #4: Jaune Flamme with spindly foliage (2 pictures)



Plant #5: Heart Variety with spindly foliage (plant on right, one in left of pic with normal foliage is a different plant, (I put 2 plants in each of my Texas Tomato cages).


Plant #6 & #7: More yellowing leaves, not at bottom of plant (there is no #7- I got confused)


Plant #8: Leaf edges yellowing/browning


Plant #9: Brown spot on leaf