You need to pass 2 theory tests (basic theory and advance theory) and 1 practical test in order to get your driving license in Singapore.

Following are the steps you may consider as a general guide:
1. register an account with any of the three Test Centers (Bukit Batok, Comfort, Singapore Safety)
2. study
3. book a test date for the Basic Theory Test (BTT)
4. pass your BTT and apply for a Provisional Driving License (PDL)
5. practice driving and at the same time study for the Final Theory Test (FTT)
6. pass the final driving theory test
7. pass the practical driving test
8. a Qualified Driving License will then be issued to you.

After passing the basic theory test of driving, you can apply for the PDL, and usually you will get it on the spot after some simple eyesight testing and fee payment (25.00S$)

The PDL is valid for 6 months from the date of issue.

You get to pratise driving and better to pass the practical test during the period,

or otherwise, you need to renew the license with another 25.00S$.

PDL is valid for 6 months only, wheaers QDL is normally last for life time, unless been revoked or disqualified.

PDL is licensed to learner driver who need to practice driving while on the way of obtaining the final QDL;

QDL is licensed to someone who already passed the stages of a learner driver, and legally to drive a vehicle.

PDL holders are not allowed to drive on the express way, while QDL drivers are not restricted by this rule.

The Basic theory test contains 50 multiple choice questions (MCQ)
and you should complete answering them within 50 minutes.

Normally each question will contain 3 options,
and you have to get at least 45 out of the total 50 to be correct in order to pass.

the Basic Theory Test will focus more on the traffic signs, signals, traffic rules, regulations and code of conduct on the road etc.

so you shall expect questions from those various topics.

Yes;
if you already have an account with any of the 3 driving centers (Bukit Batok, Comfort, Singapore Safety). you can use their online services to book a test date for your Basic Theory Test (BTT) or Final Theory Test (FTT).

If you don't have one yet, you need to go down personally with your IC to open an account first, then you can book your BTT or FTT test date online.

note: the account usually will last for a period of 6 months

you must be at least 18 years old;

physically and mentally healthy;

plus no color blindness (if you can not differentiate various colors of the traffic lights, you should know how dangerous it will be).

the test itself is S$6.00, and every retest will be the same amount.

other possible cost:
Study materials
book 1. the official handbook (Basic theory of driving) S$3.20
book 2. the official handbook (advance theory of driving) S$3.70