I'm not a beast player so cant give a huge amount of adviuce, but I did give serious thought to starting them for 8th and have been listening to other players (and playing a few practice games with them).
Gors- I would take the extra hand weapon in small units, but if you want a large survivable block go with shields, especially if you are taking a hoard. If you already have 31 attacks from a hoard then +10 is that impressive, but +1AS and 6+ parry is fairly nice.
Minotaurs- you may as well run them 2 deep unless you are facing cannons. Units of either 6 or 8 (3*2 or 4*2) seem to work well. Great weapons are the way to go since AHW dont give them their full rank attacks and low I means you'll hit after most things anyway.
Razorgors- only used 1 myself and it wasnt that impressive, but I've heard a lot of people say a lot of good things about the unit... nothing good about the model though. Locally its called a pumbagor (since it looks like its been ripped from the lion king) or just the rabid pig...
Think very carefully about your lord choice. The biggest problem with beasts is their low Ld; personally I would take a Ld9 general and use him solely to bolster the army (ie kit him out to stand around and live). A BSB is also a must in any beasts army. As an example why: my ogres played beasts a while ago and I just braingobbler'd (panic check) 3/5 ambushing units off the board as well as making 2 batteline units run for a couple turns, terror got another ambusher to run away and fear worked chaos in combat... that army was max ld8, and ld6-7 ambushers and I had a skull mantle on my slaughtermaster (-1Ld to tests caused by him or his unit).
Other then the low leadership a few other things should be mentioned:
Slugtongue is awesome... he is a great choice and something I would always include.
Monsters are iffy, seriously iffy. most beast players on the board don't use them at all. Personally I would take a cygor or 2 for a bit of fun, but they would die really quickly to anyone with strong shooting or direct damage magic.
Im pretty much quoting Tim/Steve for epic truth, all excellent points
Iv played Beastmen for about 6 months now on and off, few things i would add:
Gor equipment choices are purely down to the player. I personally run AHWs because i just dont roll enough 6s to make any use of the shields, and i need the extra attacks to drag my combat resolution up
Razorgors are brilliant units, iv dropped them currently purely because the current model is utter ass and my IOB-griffon conversion isnt finished yet, but they are a really solid choice- i would recommend them above Minotaurs
Chariots are your friends. Use them to smack skirmishers, missle troops and glass cannon units like swordmasters and GW-marauders about, then follow up with a good big unit of gors
dont underestimate the effectiveness of ungors- they are cheap and have stats just as good as a lot of other troops in the game, with spears in a good big steadfast unit they can be a solid rock
Lore of Shadows ftw, you need the debuffs to hit the enemy with and things like Mindrazor and Pit make up for some of the weaknesses that the army has