It's a trap! Don't follow these kind of approach unless you are very sure of what you're doing. It's time consuming and mostly useless. Your study goals should be aimed at having some "range knowledge", exploit your opponents and focus on the big EV spots.

About your question, on the flop you should bluff way more than the optimal value on river. If you pot on the river you should have 33% bluffs to be balanced, but a lot more on the flop and some more on the turn.

I can tell you what you can do IP as the PFR heads-up, just bet about 1/3 of the pot with your whole range, that's a robust strategy that won't get exploited generally on microstakes. Now you can study other spots.

Let's say that you want to study the turn CB IP on a beginner level, playing micros, where we polarize or range and bet value hands and bluffs. Some insights:

• The average microstakes player don't overfold to turn CBets. That means that the big EV play is to value bet correctly for a good size. Bluffing would be marginally +EV if doing correctly.

• So you need to focus on your valuebetting range on the turn, try to estimate what would be the worse hand you want to value bet. And about sizing, blanks invite to big sizes, dynamic cards (3-flush or straight coming) lower our bet sizing. There are some hands that can "value check", but I'd only do it vs agressive opponents that will bluff the river. Against passive opposition you'd be better betting everything here.

• Then you need to bluff some, but not a lot. Don't try to be balanced, is just too hard to do it right and it won't add a lot of winrate. Pick some good natural bluffs (draws, specially picked up draws, good blockers) and bet them the same size as your value. If Villian overfolds the river you can bluff more on the turn to knock him out of the pot on the river. Also, think that you can check some potential bluffs and bet the river with them if checked to, that's a way more profitable bluffing spot where the average player overfolds.

• Always try to think about your opponent's range and tendencies, to move your value betting thresholds or to bluff some more or less, thinking what kind of hands your opponent is folding.

Try to play logical, robust, exploitive poker, with some game theory basis, but don't get trapped in the super balanced strategies, at least not yet.

Good Luck!