Spanish does have a real future tense, and the good news is that you need no new sounds for it. The endings are the versions of haber you already know, minus the silent h.
-é · -emos · -á · -ás · -án
Two things make it unusual. You add the ending to the whole "to" form, not to a stripped stem, and it does not matter whether the verb is -ar, -er or -ir: one set of endings covers all three.
The ending takes the accent, so you are literally pushing the accent forward into the future. That may look like coincidence, but the same phenomenon turns up elsewhere.
There is a practical bonus: since the accent is always on the ending, you never have to think about where it goes. Organizará, on the end.
The most common mistake learners make with this tense. For I will prepare, they say "preparé", dropping the final ar because they never thought out the whole verb.
preparar + -é → prepararé
Esperaré · Organizará · Organizarán · Encontraré · Lo encontraré · Lo encontraremos · Lo encontrará · Los encontrará
Ir is wildly irregular in the present, but the future follows the rule exactly.
Irán a Irán · ¿Irás? · ¿No irás? · ¿Por qué no irás?
The future does not excuse you from the little words. Quedaré is I will remain; for I will stay you must still have the me.
Me quedaré aquí · Estaré cansado · Será
He dormido · Hemos dormido · Ha dormido · Lo han recomendado · Desayuno con ellos mañana · Voy a desayunar con ellos
With haber structures the little word has to come before, with no option about placement.