TEC is a pretty solid faction. Its lacking in special abilities like GUARDIAN or SUBVERTER but makes up with that in raw survivability and DPS. They have also the best economy in the game.
The start of a game and the overall strategy is in heavy flux, the most influencing factors being map size and how many opponents you are up against.
In a small map you probably want to focus on sheer force primarily whilst in larger maps you want to get an advantage from your economics.
So its really hard to make a statement about a general approach.
"Those are... nukes!!! Make sure not a single one reaches the colony!!!"
I found an early Marza dreadnought pretty devastating on small maps. Its raze planet ability really puts the hurt on small developing empires. You use it to conquer like two colonies and then send it way to your enemies colonies, upgrading it along the flight (buying levels that is, and increase armor tech). Its missile barrage ability gained later can eradicate whole fleets of LRF. Its a monster and noone kills colonies faster. It will not destroy an oponent singelhandly but is capable to deny expansions until it can be dealt with wich may take some time.
And whilst your one man war is fought you tech to LRF (that would be Javelis LRM swarms) and through it to hoshikos.
Usually you can send backup LRF shortly taking the war to your enemy, away from your homeworlds and later repair the Marza with Hoshikos.
You can also create a swarm of scouts and capitalize on the Arcova bomb ability for a nasty surprise.
Since you are well on your way to Kodiaks you may pull through with it.
You also can opt for a quick expansion with the Akkan Battlecruiser as your first capital ship.
With 1.09 even the Percheron seems to have some use at least. Be careful to rely on fighters early in the game, not bombers (those are for taking down heavies and structures, against LRF wich will be the brunt of the forces you face fighters are much better).
You can use a lone Cielo for enhancing focused fire.
Of course the special abilities of the other races can be your undoing. And thats where Cobalts come into the game with their sabotage reactor ability.
The style of you game is very heavily dictated by the first capital ship you choose and varies greatly with other setups, so choose wisely.