You should find an aquarium forum.
My 2 cents is that a 10 gallon tank is almost too small to be worthwhile. But it's better than nothing, and if you don't have room for a larger tank it can be something to enjoy.
PlantedTank.net is a forum that specializes on aquatic plants.
Larger aquariums aren't expensive. PetCo (or one of the big pets stores) regularly has sales on glass aquariums for $1 per gallon (up to 55 gallons). The pumps, filters, heaters, and lights can add up, but you can shop online and find good deals or you can DIY on lighting and filter systems.
Larger tanks are easier to keep because it's easier to keep the water chemistry stable. You can also keep more and larger types of fish. You can find tables that list the number of fish per gallon, or gallons per fish for larger species.
I'd recommend that you do not purchase your fish or plants from a franchise store. You will get better quality fish and plants from a small owner/operator that specializes in aquariums. The franchises tend to hire clueless kids and all of their tanks are plumbed to a central filtration system, which means a sick batch of fish in one tank automatically spread the germs to the entire store.
The owner's policy of the fish shop in my small town is that he "requires" you to bring in a sample of your aquarium water before he will sell you any fish the first time. We jokingly call him "the fish Nazi", but it really is a good policy. New aquariums have to "cycle" the water for a while before fish can live in it, and many beginners don't know about that.
Fish are great relatively low maintenance pets. A few species require a lot of attention, but most can be left for a week or longer without worry.
I'd recommend that you avoid aggressive species if you intend to have a community tank (a group of mixed species). Some of the aggressive ones are interesting and also beautiful, but it's no fun to watch them terrorize the group. They also tend to be destructive towards your plants.
I'm not very knowledgeable on aquatic plants. That's why I posted the link to the forum. I haven't visited that forum in a while, but I recall most of the planted tanks only have small schooling fish, like Neon Tetras, or no fish at all. Some kept freshwater shrimp, which are really interesting but really small. I tried a few of the shrimp, but they quickly became fish food for my Angles. :(
My favorite aquarium fish is the Discus. They are the most demanding freshwater fish to maintain, but they are also the most beautiful and interesting. If you have the time and space they are something to aspire to.
Good luck with your new hobby.
:)