Beginner: Need help with 1700 point list Space Marines

I always get destroyed by every army and I am going to a battle and I do not know which army I will play against.

Here is what I have:

1 Captain

1 Chapter Master

Tigerius

40 Tactical Marines

5 Assualt marines

5 Terminators

1 Land Raider Crusader

1 Vindicator

1 Ironclad

1 Dreadnought

1 Attack Bike

5 Scouts

1 Rhino

1 Drop Pod


Please provide tactics and possibly a sample army list, also, if you may recommend what I should buy next.

Thank you very much in advance,

DestroyerHive`s friend.