It's obviously up to you what approach you choose, but if you're looking for advice I wouldn't recommend cold hookups (ie, just met them at a bar ect that night), not this early on in your adventure anyway.
You could look at finding bulls online who suit your ambitions and then chat to them online/through kik or on the phone until you feel you've vetted them thoroughly. Don't forget, there can be a lot of shady/crazy people out there and you'll find an over-representation of those kind of characters in a lot of nightclubs.
You've just got a lot more control (and options) over things when you cruise online.
Maybe read some books like 'Erotic Cuckolding' by Emma Kelly and Scott KelIy, 'How to Get Your Wife to Cuckold You A Couples Guide' By Kat and Greg Webber or 'Cuckolding The Revolutionary Guide' by Marisa Rudder
Don't let the titles put you off, there's some half-way decent advice in them on all kinds of wife sharing, not just cuckolding.
You'd do well to check out the chapters on how to find/choose guys.