Welcome to the forums.
Filling out your profile helps a lot, so please complete it.
The dreaded
"B" word (BEST) is avoided when talking about things like women and steel.
There are many GOOD steels out there. Some are available anywhere and some are harder to get. Most makers start with a simple steel such as 1075/1080/1084. This steel is the simplest formula and has the lowest ( and most forgiving) heat treatment.Another good starter steel is 5160. HT is simple, the steel works easily, and it is CHEAP. In stainless steels there are several choices. CPM steels are quite popular, with CPM154, CPM S30V, CPM 3V,and others being easy to find. The old standards such as O-1,D-2, 440C, 1095, 52100, .... are used in many great knives. There are many sources, but two of the main ones are Admiral Steel,
http://www.admiralsteel.com/ ; and Crucible Steel,
http://www.crucibleservice.com/index.cfm . The amount of technical information may be confusing, but there are a lot of steel choices there.
Reading the past posts on this forum about steel discussions may help,too.
Reading and studying some basic metallurgy may not sound fun, but will put you miles ahead when picking a steel, as well as understanding HT (which is where many makers fail).
Again, welcome,
Stacy