What is the "Holy Trinity" of lens for the Canon EOS-350D camera? Please specify the models.?

I'm looking to invest in up to 3 lenses for my Canon EOS-350D DSLR camera. I'm looking for at least f/2.8 and zoomable to cover a wide range of magnification. Kindly specify the best models to go for.

If you really need to have f/2.8 available all the time, your options are limited to pro glass.

For the best, stick with Canon lenses:
Canon 17-55 f/2.8: $1050
Canon 70-200mm f/2.8: $1700
Third lens optional, depending on what you need.

Or 'on the cheap':
Tamron 17-50mm f/2.8: $450
Sigma 70-200mm f/2.8: $890
Third lens optional, depending on what you need.

If that's also too much money, add some details to your question. Include a budget and your shooting style (so we can also suggest a third lens.)

You sound like a profesional, like my dad. I'm clueless, all I know s that the best ones are huge and white.

You're not going to find much in Zoom at f/2.8. More like 3.5

Canon, of course, makes a great lens.

Sigma and Tamaron make good lenses.

I would recmmond anything from Canon f/2.8 will weigh alot. How much are you willing to spend? The "Holy Trinty" is going to cost you $5000+. Heres what I would get.

Wide angle: Canon 16-35mm f/2.8 L $1400 +/-
Standard Angle: Canon 24-70mm f/2.8 L $1200+/-
Telephoto: Canon 70-200mm f/2.8 L IS $1600+/-