First off, I'm learning Gaelic, and I definitely do not speak it yet (by a l-o-o-o-ng stretch), and I'm certain that Lughaidh knows a heck of a lot more than I do.
There is one particular verb difference you might mention, which is that Gaelic has no simple present tense (except for the verb
bi), leaving one to choose between the present progressive and the future. In most cases, the future is used where Irish would use the simple present, but the present progressive is also used.
An example of the use of the future tense:
Am feur a thig a-mach sa Mhàrt, thèid e a-staigh sa Ghiblean.The grass that grows [will grow] in March disappears [will disappear] in April.
As an example of when the present progressive might be better, here's something I offered on the "old site", where the request was for "I call on my ancestors to walk with me":
Quote:
Tha mi a' gairm air mo shinnsearan a bhith a' coiseachd leam
I['m] call[ing] on my ancestors to [be] walk[ing] with me
Scottish Gaelic does not have a simple present tense ("I call"), and one normally has to choose between the present progressive tense ("I am calling") or the future tense ("I will call"). The future is often used where we use the simple present in English, but in this case the present progressive sounds better in Gaelic.