Here are some helpful websites for NCAA beginners.
Balance Beam Situation: Clickable Code of Point, Team Depth charts, meet live blogs, NQS calculator. Spencer does it all.
College Gymnastics News: Also meet live blogs, fantasy gymnastics, gymnast interviews, leotard ratings, and more.
Road To Nationals: Meet coverage, Results, NQS, team rankings on individual events, tracking team finishes by seasons (goes back to 1998 I think), individual athlete score history, and more.
Conferences
Conferences pretty much align with football/basketball sport conferences.
Here is run down. These are basically the "leagues".
ACC (6): Clemson, North Carolina, North Carolina State, Cal, Pittsburgh, Stanford
SEC (9): Arkansas, Georgia, Oklahoma, Alabama, Missouri, Kentucky, Florida, LSU, Auburn
Big Ten (12): Rutgers, Maryland, Ohio State, Penn State, Michigan, Michigan State, Washington, UCLA, Illinois, Iowa, Nebraska, Minnesota
Mountain West (4): San Jose State, Utah State, Boise State, Air Force
Mountain Pacific (4) Alaska, Southern Utah, Sacramento State, UC Davis
Big 12 (7): Utah, Arizona State, Arizona, West Virginia, BYU, Iowa State, Denver
Gymnastics East Conference/GEC (8): Bridgeport, SCSU, Penn, Yale, West Chester, Brown, Cornell, William & Mary
East Atlantic Gymnastics League/EAGL (5): George Washington, New Hampshire, LIU, Temple, Towson
MAC (7): Northern Illinois, Bowling Green, Central Michigan, Eastern Michigan, Western Michigan, Ball State, Kent State
Independent (4): Greenville, Wilberforce, Fisk (final season), Oregon State
MIC (4): Texas Woman's, Illinois State, South East Missouri/SEMO, Centenary
NCGA East (7): Springfield, Cortland, Ithaca, Utica, Brockport, Rhode Island College, Ursinus
NCGA West/WIAC (9) UW-Whitewater, UW OshKosh, UW La Crosse, UW Eau Claire, UW Stout, Hamline, Gustavus Adolphus, Simpson, Winona State
Divisions
Divisions are based on where the school is in terms of scholarships/full rides.
Division 1 are most of the schools- they offer full scholarships and can have up to 20 on the roster under scholarship. Not all D1 schools will have 20 scholarships. some schools offer less. 62 schools are D1.
Division 2 are allowed to have 6 gymnasts on the roster with athletic scholarship. There are 5 schools that sponsor gymnastics, counting Fisk which is not in the NCAA.
Division 3 do not have athletic scholarships. 19 schools are D3.
There is a separate USAG Collegiate Nationals that are contested by D1 with less than 7.5 gymnasts on scholarship and D2 teams plus D3 teams-not part of NCGA. The meet was rebranded WGCNIC (Women's Gymnastics Collegiate National Invitational Championships.
The team that compete are (10): Wilberforce (3), Centenary (3), Greenville (3), Fisk (NAIA D 2), SCSU (2), West Chester (2), Alaska (1), Bridgeport (2), SEMO (1), Texas Woman's (2)
There are three "national" championships.
1. NCAA Gymnastics Tournament: 36 teams and individuals qualify to 4 regionals. 8 teams qualify to NCAA National Semi-Finals, 4 on the Floor Championship. Mostly D1 teams but D2 teams have qualified to regionals as a full team in the past, though rare.
2. NCGA Nationals (D3 teams): 2 teams from NCGA East and 2 teams from NCGA West qualify based on top 2 finish at Regionals, then 1 team from each Regional with the highest NQS qualifies, plus individuals.
3. WGCNIC.