Stupid bike tyre /wheel question...

On cleaning my bike I found a chip of glass in my tyre - I carefully removed it - inner tube intact but I have a 3mm hole in the tyre...  Before I go out again on the road should I replace it?  If I replace it would it be worth buying some winter road tyres - rather than the smooth ones I currently have?

Also I seem to have seen / read that a turbo can eat up tyres - so is it a good idea to buy some turbo training tyres - if so how easy is it to swap between tyres - so I can change from road to turbo tyres - or is it worth buying another set of wheels???

If new wheels are on the horizon what do I buy?  What is reasonable / good to get for a road bike?

My brain is spinning over such matters - rather than my bike wheels so please help.

Thanks In Advance

BWT

if the rest of the tyre is intact, then do as PSC suggests with glue or/and stick a "tyre boot" inside the tyre.  this is a pieces of soft dense material - some people suggest a piece of old toothpaste tube - that sits between the inner tube and tyre at the spot where the tyre is split so acts as a buffer.  I've run a tyre with one in for about 2 years before I replaced the tyre through general wear - no issues.

I have a turbo wheel with  a turbo tyre so it's easy to swap over as needed.  inexpensive rims and a cheaper cassette kept the costs down

winter/all round tyres that have better puncture protection are worth having especially with all the autumn debris now hitting the roads - I use Conti Gatorskins all year round on my everyday bike.  there's a good up to date review of these tyres on road.cc - http://road.cc/content/buyers-guide/68578-buyers-guide-best-tyres-get-you-through-winter

+1 for the Conti Gatorskins

a turbo will eat tyres faster than the road - use your old tyres..

i have a spare wheel

cosmic carbone SL are a good 'entry' level 'proper' wheel