Toking - Don't just leave things to chance, this is what I do each time

1. Check juice level, airflow ring & Wattage set on mod

2. De-pop & pre-warm the tank, either by holding the fire button whilst not toking (see here for demo), or using a reverse toke as mentioned in the video here (link to be added)

3. Take a couple of deep breaths, ending with lungs exhaled

4. Put the mouthpiece to your lips ready to toke, and after a slight pause, aim ti feed in the toke coinciding with the start of simmering sounds from the coil.  If you de-popped the tank with either of the above suggestions, then the pause might be half a second or less, or more than a second if you haven't pre-warmed the coil.

5. During the toke, listen for the unmistakable "gentle roaring sound", meaning you have a good toke rate.  On higher Wattages/dual coils, also expect to feel significant warmth from the vapour in the lungs.  If it feels uncomfortably hot, pull the toke harder to suck in more ambient air

6. Keep the toke going,  counting "one thousand and one, one thousand and two" to get an idea of toke duration.  Keep in mind the exponentiallt rising punch from longer tokes

Toke rate

Unusual Coil Noises Listen to the coil during the toke, and get used to how it sounds when working at optimum Wattage/toke rate.  As mentioned, when upto temperature, this should be a gentle roar (caused by vapour turbulence in the long driptip), with a gentle simmering coming from the coil, perhaps with the occasional spit of two.  If the coil starts making unusual sounds (e.g, fierce boiling or loud hissing), stop toking immediately and check the tank/mod

Flooding - if you're having problems with gurgling, lack of vapour despite ample wattages, juice ingestion, tank mysteriously warming up, or leaking when inverted, then it's likely that juice has entered the inner chamber (i.e. flooding).  A sharp blow down the mouthpiece will clear most of if, but unless you've set up the tank properly it'll probably happen again.  Refer to the setup guides as linked from the site RTA section