congratulations and welcome to the vizsla family:-)
you can start immediately, just remember their attention span at this age super short. so u may be able to do 3 sits and your pup will turn around and start chewing on something on the floor as an excuse for teething:-). use your kibble and feeding time to train, my rule has always been that at least a handful of kibble per meal gets hand fed instead of allowing the puppy to eat from the bowl.
we attach to the pup a lead every day to just drag around in the house, but make sure it does not get caught anywhere . some people do that all day, for us it works to just do it from time to time and always start with a play session so that the puppy associates it with fun.
be careful related to expectations walking on lead and always start with short sessions at home inside, followed by short sessions on backyard, then very short sessions on the street etc. several considerations: puppy joints do not tolerate the pressure the normal human walk would dictate. if you look at vizslas when they walk off leash, they would go, sniff, run, stop, sniff, come back to handler, sniff, run etc, instead of human starts walking and goes with pretty much the same pace the whole time without really ever stopping. 2. attention span 3. crazy load of sniffable and audible distractions. remember they hear and smell many many times better than us, so walking on the street for them is like us having to be in a perfume shop where all bottles got opened and some even poured out and a rock concert is playing at the same time.