I have a question started buying the first three TPB's and discovered a number of issues are missing from the run and was wondering if anyone could tell me why so far its
Starman 6,11 and 18 and if anyone could go further and tell me what i missed it woudl be appreciated

Volume 4 (Times Past) collects issues 6, 11, 18, 28, the first Annual anual and Secret Files).

However the TPBs did miss out the odd issue here and there later on, without going back with similar collections to Times Past.

This is one of the reasons I've sold off my TPBs and have started picking up the Omnibus editions, which do collect it all. In chronological order, rather then jumping around a bit. And they also includes related comics ,like the Shade mini-series, which the TPBs missed out.

Ah I see thanks well I probaly wont pick up the Omnibus I got these becasue they were 5 bucks so I take it that these were stand alone stories. I hate that when TPB dont collect everything. Well with an Omnibus Now I see why the TPB were in the 75% off bin