Hello i have no idea.
Base? Char level? Récipe?

Many thx in advance.

Thx but i was hoping something like level XX Char XX bots etc etc,
Many thx anyway

Its literally in the guide:

Caster Boots

Formula: Magic Boots + Thul Rune + Perfect Amethyst + Any Jewel

Boots #1
Best affixes: 30 cr/lr + any affix from the list: 3 dex, 10 fhr, 10 frw, Poison Length Reduced by 25%, Half Freeze Duration
Comments: Since 30 cr/lr have highest rlvl - equal 13 - it's exactly same situation as with Caster Belt #1. We can get only one other affix and lvl req of our craft will be 29.
Be aware that Magic Boots can be bought only on normal, so we can't get high ilvl on them. We will need to adjust clvl then (look at Common problems and misunderstandings for further explanations).
Where to buy magic magic boots: Charsi (Normal), Gheed (Normal), Elzix (Normal)
What char lvl we need: For both crafting and buying belts we need character level 49. Belt must be bought from Elzix.
A slightly better would be Charsi or Gheed with char lvl 50, but with 49lvl many people can use mld chars, and 50 lvl gives you only like 1% better chance for roll resists rather than something useless.
Boots #2
Best affixes: Any 3 affixes from the list: 20 cr/lr, 3 dex, 10 fhr, 10 frw, Poison Length Reduced by 25%, Half Freeze Duration
Comments: Highest rlvl equal to 9 is owned by 3 dex and 20 cr/lr affixes, so with 3 random affixes from list we still can have 28 lvl req:
new rlvl= rlvl of highest affix + 10 + 3*amount of mods = 9 + 10 + 3*3 = 28
Since we need 3 affixes this situation is similar to Caster Belt #2. Be aware that Magic Boots can be bought only on normal, so we can't get high ilvl on them. We will need to adjust clvl then.
Where to buy magic magic boots: Charsi (Normal), Gheed (Normal)
What char lvl we need: For both crafting and buying belts we need character level 90.

Didnt say nothing about mana Inc?

You will always have these preset mods:

Mana Reg 4-10%
+10-20 mana
+2-5% Max Mana

Rest varies as already posted

Great Bro