Ya know so if you wanted to say "I am here" :

Táim anseo = I am here
Tá mé anseo = I am here


But the first would mean sortof that I am here, usually or always.
So if you were somewhere every day or had been for a long time you might use that.

"Tá mé" would just mean "I am" without being so specific.
But one could also say :
"Tá mé anseo gach lá" which means "I am here very day".


So 'Táim' is more like... a present continual tense of the present tense ya know ?