I still see two bridges, as mentioned earlier please stick to one bridge.
When it comes to VLAN, please use this topic only:
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
It has got lots of examples and will guide you to a working environment.
My experience is that there is a lot of crap, escpecially on YouTube when it comes to Mikrotik.