Hi wrighty1,
Two important questions:
What budget do you have put aside for a new pursuit like ff?
Is ff a sport you think you'll be indulging quite a bit of your time to in the future?
To invest time and money in casting instruction as a novice is great advice, but if your budget for ff equipment is less than a full days instruction with a qualified instructor - your a bit snookered.
But to answer your original question - for 'a typical' sized classic river in Ireland or the UK a 4/5 wt, 9 foot would be a good starting point, as this rod will serve a multitude of purposes and techniques on a river/stream - from nymphing, wetfly, dryfly or czech nymphing. If you intend to explore rivers around the country or abroad a 4 piece (with tube) is ideal for luggage or for the boot of the car. It is worth investing in a 'middle of the range rod' as you advance further the rod will serve you well at all levels of skill. If you indeed become very experienced down the track it can always serve as a well loved back up rod to your more fancy specialized new rods...
The Redington Redfly 2 - 5wt, Greys GRXI+ 5wt or the Wynwood Aura 5wt - would be a reliable starting point with 4 piece, tube and nice rod build for the respective prices.
One key point - whatever rod you choose wether the action is fast-tip or mid-tip it is really important to balance the rod perfectly with the right reel and line choice to make casting an all day enjoyable experience... maybe PP can help you with this aspect.
Again if your budget could cover casting instruction this should be your first port of call as others have said.
Goodluck.