Who rates the rates and what do the route names symbolize, such as F9+, E4, that type of thing?l see these in articles in Mens Journal and some outdoor and adventure magazines and books l read and have never understood it, l looked for explinations online and couldnt find any.What is the easiest routes rated and what are the hardest routes rated?
and like the 5.14, 5.15, 5.7 etc

Ok, there is different rating systems, for different parts of the world, & also for different types of climbing.

In for rock climbing in North America, we start at 5.0. 4th class means it is a lower angle & generally u do not have to rope up for it, although u may want to. 3rd class is even easier. 5.3-5.7 is easy. 5.7-510 is intermediate. After 5.10, it goes 5.10a, 510b, 510c, 510d, 511a, 511b & so on. l believe the world is hardest route is so far is a 5.15a. The rating refers to the hardest single move on the route, but if the whoe route is hard or tiring or involves some crazy move it gets a ''+'' (like 5.9+) If the protection is runnout it gets an ''R'' if the protection is poor it gets & ''x''. Ratings depend on where u r because they r all relevant to other climbs in the area.

For ice climbing it W l (waterfall ice) W l 1 can be climbed with just crampons & single mountain ax. W l 5 is completely vertical with very few ledges. Again, these r all relevant to the area.

Mixed climbing gets an M rating. l am not sure, all l know is l seconded an M6 & it was pretty tough. There is a few M8 is where l live.

For aid climbing, A0 is a free climb that u aid because u suck, lol, like l do sometimes. A5 relies competely on hooks & stuff that l do not really know much about, but sounds really scary (no good protection).

E2 (British( = 5,10c/d =20/21 Australian = 6b/6+ France

Just Google ''climbing grading conversion'' & u can look it up.