Taal Lake is Tagaytay City's pride. It was a long ride from the city proper though. We do have a private vehicle but if you want to visit and there are people assisting tourists to go there. We happen to find a guide one while asking a police officer. They don't really have a uniform but they can show you an identification card.
It was quite a ride since the road is steep. After about 30 minutes ride from the city we arrived at a small resort. Before we even pay for anything, Another guide explained to us the area, how to reach the crater and the fees that we have to pay for.
The tourist guides are prepared with a tarpaulin showing the area and a price list they used to explain. You can pay everything before leaving which totaled to P1,300 since there's only 5 of us in the group (6 max per group for group fees).
It's going to be a long ride so you can buy water for P50 (500 ml) or you can also just get one there since there will be people selling but it would be a lot more expensive. I would also suggest you to rent a hat and a disposable mask for P50, lather an ample amount of sunscreen and if you're afraid to get burned like me, wear a jacket.
First ride to the crater is a by a boat. I was seven when I first (and last) took a boat ride. I was scared at the beginning because I don't know how to swim but it was calming afterwards. It took us about 20 to 25 minutes to cross the lake.
The second is a ride by horse. There will be a jocky guiding us along the way of course. It took us about 30 minutes under the sun until we reached the top.
At the top of the hill you'd see this beautiful scenery but I didn't enjoy it much sine there are a lot of tourists in the area. It would definitely be nicer to stay a bit longer maybe until later in the afternoon where there aren't many people left.
I'm not much of an adventurer myself but the view, the experience and the fear I overcome is very much worth it.