Hi Julie,
welcome to COL!
Tris and I are the 'parents' to Millie; a blue roan girlie who's now 13months - and boy oh boy I agree with Emma that time does fly by!!
We've got a good FAQ section on the boards, and it covers basic puppy training, check it out here ....
http://www.cockersonline.co.uk/forum/viewf...wforum.php?f=47Also, as far (pardon the pun! :twisted: ) as extendable leads go - I'd steer clear. Cockers can't be quite strong willed little tikes, and ideally it's best to 'remain in control' and teach him to walk to heel; also practice your recall and that way you can let him off in the park / nearby fields and give him a good run when he's older and has the hang of recall
Have a word with your vet and see if they can recommend any local training classes you could take Jarvis too - not only will this help you 'learn' how to train him effectively, but it will also help socialise him with other dogs so that he doesn't harbour any fear of them when he's older.
HTH - enjoy your pup
ps - Jarvis... cool
:wink: