On frequency grounds, I strongly recommend you play Weak Twos rather than the old-fashioned (and far rarer) stronger alternative. These can normally be opened at the one-level.

Hand i)	Hand ii)	Hand iii)
♠ A K J 7 2 ♥ A ♦ A Q 9 7 2 ♣ Q 3	♠ A K J 9 8 2 ♥ A K J ♦ Q J 2 ♣ Q	♠ A K Q J 6 2 ♥ A K Q ♦ K 5 2 ♣ 2

With the first and second, open 1♠. It’s unlikely in the modern, aggressive game that everyone will pass; if they do, you’ve probably not missed much. The third is so powerful you can pretend it has 23 points and open 2♣. Note 2♣ is a strong bid showing 23 or more points, not a Weak Two.

Playing the unimaginatively named Three Weak Twos (recommended), an opening bid of 2♦, 2♥ or 2♠ shows about 5-10 points and a good six-card suit (containing two or more honours — including the ten), like a three-bid but with one fewer card: a mini pre-empt. Very simple, very effective.

I am not a fan of Benjaminised Acol (Benji) which uses just 2♥ and 2♠ as weak and reserves 2♣ and 2♦ artificially for strong hands. You don’t need two strong bids and the Weak 2♦ happens far more often.
   

Hand i)	Hand ii)	Hand iii)
♠ K J 10 9 8 2 ♥ 7 ♦ Q J 2 ♣ 4 3 2	♠ 5 2 ♥ 2 ♦ A Q 9 8 5 2 ♣ J 9 8 2	♠ K 8 2 ♥ Q 8 7 5 4 3 ♦ J 4 2 ♣ 6

   
Open 2♠ with the first hand. Open 2♦ with the second. However, don’t open 2♥ with the third (pass instead) — the suit lacks two honours.

After opening the Weak Two, you have shown your hand very accurately so should leave further decisions to partner. The vast majority of the time, he will know exactly what to do (and you’ll shut up). If he still wants to know more about your hand, he can use the strong asking bid of 2NT (more later).