Any place I can buy a toy of Bulkhead or has that ship sailed?
Secondary market only. There were two Bulkheads in the TFP line, an earlier First Edition one and a later Voyager in the main TFP line.
TFP Voyager on the left, First Edition on the right.
The First Edition one is
infinitely superior to the TFP Voyager. It'll run you more money but if you're a fan of Bulkhead, I
highly recommend tracking down the First Edition version. There is not a single thing about the TFP Voyager that is better than the First Edition one. The First Edition is without question the definitive Bulkhead toy.
PS: I want to get into the IDW comics. Any tips?
I recommend just jumping in at the James Roberts era. I just re-read the entire IDW line and it really is amazing how the quality leaps skyward as soon as he shows up.
I suggest this as a "prologue" read order.
Prologue
Last Stand of the Wreckers -
Vital backstory to a major MTMTE plot reveal
The Transformers Ongoing (2009-2011) #22 & #23 -
Vital backstory to another MTMTE plot reveal plus the first story to start laying down Roberts' version of how and why the Great War started
Drift Miniseries #1-4 -
Backstory on Drift and the Crystal City which becomes relevant later; note this is the adjectiveless Drift series, not the Empire of Stone series
From here you can jump into MTMTE Vol. 1, which starts off with the Death of Optimus Prime one-shot. All you need to know in terms of what happened between what you read in TF #22 and #23 is that a huge stupid fight happened on Cybertron, Optimus Prime was killed in the process using the Matrix to save everyone (it's what he does, after all), and the Great War ended with the Autobots the victors. Now they have to figure out how to live without war after fighting for millions of years.
Season 1
MTMTE Vol. 1
Spotlight: Hoist
Spotlight: Trailcutter
MTMTE Vol. 2
MTMTE Vol. 3
MTMTE Vol. 4
MTMTE Vol. 5
RID Vol. 1
RID Vol. 2
RID Vol. 3
RID Vol. 4
RID Vol. 5
From there it goes into Dark Cybertron, which is not great but it changes a lot and leads you into MTMTE Vol. 6. From there...
Season 2
Dark Cybertron Vol. 1
Dark Cybertron Vol. 2
Transformers: Punishment
Windblade Miniseries
MTMTE Vol. 6
RID Vol. 6
MTMTE Vol. 7
Combiner Wars: First Strike
Combiner Wars (RID Vol. 7)
MTMTE Vol. 8
Drift: Empire of Stone Miniseries
Transformers Vol. 8 (note: at this point RID changes its name to just Transformers)
Transformers: Distant Stars
Sins of the Wreckers Miniseries
MTMTE Vol. 9
Transformers Vol. 9
Transformers Holiday Special
MTMTE Vol. 10
I'm not caught up beyond that, when it gets into all the Revolution stuff, but that should give you plenty to read before you have to worry about that.