En octubre y noviembre suelo escribir un esquema nuevo y luego leerlo en voz alta.

With months, Spanish normally uses en + month for in + month:

• en octubre = in October
• en noviembre = in November

You usually do not use an article here. So en octubre y noviembre is the normal way to say in October and November.

No. In Spanish, months are normally written in lowercase:

• octubre
• noviembre

This is different from English, where October and November are capitalized.

Suelo is the first person singular of the verb soler.

soler + infinitive means to usually do something or to tend to do something.

So:

• suelo escribir = I usually write
• suelo leer = I usually read

In this sentence, suelo gives the idea of a habit or routine.

Spanish often leaves out subject pronouns when the verb already makes the subject clear.

Here, suelo clearly means I usually, so yo is not needed.

• Yo suelo escribir... = correct
• Suelo escribir... = also correct, and more natural in many contexts

This is very common in Spanish.

Because soler is followed by an infinitive. In this sentence, it applies to both actions:

• suelo escribir
• (suelo) leerlo

Spanish often avoids repeating the same verb if it is understood. So the sentence means:

• I usually write a new outline and then read it aloud

The second suelo is omitted because it would be repetitive.

Because not all nouns ending in -a are feminine.

Esquema is a masculine noun:

• un esquema
• el esquema

This happens with quite a few nouns of Greek origin ending in -ma, such as:

• el problema
• el sistema
• el tema
• el programa

So un esquema nuevo is correct.

Both are possible, but the meaning or emphasis can shift slightly.

• un esquema nuevo = a new outline, with nuevo as a normal descriptive adjective
• un nuevo esquema = often emphasizes a new/different/another outline

In many cases, both are natural. Here, un esquema nuevo sounds like a straightforward description: the outline is new.

Here, luego means then or afterwards.

So:

• y luego leerlo = and then read it

Yes, después would also work in many contexts:

• y después leerlo

Both are common. In this sentence, luego sounds very natural for a sequence of actions.

Lo is a direct object pronoun, and it refers back to un esquema nuevo.

So:

• escribir un esquema nuevo = to write a new outline
• leerlo = to read it

Spanish often avoids repeating the noun and uses a pronoun instead, just like English does with it.

Also, object pronouns can attach to an infinitive, which is why you get leer + lo = leerlo.

Sometimes, with a conjugated verb + infinitive structure, Spanish allows two positions for the object pronoun:

• suelo leerlo
• lo suelo leer

Both can be correct.

But in this sentence, leerlo is especially natural because the pronoun belongs directly with leer, and it clearly refers to the outline that was just mentioned.

En voz alta is the standard expression for aloud or out loud.

Literally, it is something like in a loud voice, but you should learn it as a fixed phrase:

• leer en voz alta = to read aloud

Voz is a feminine noun, so the adjective is alta, not alto.

It sounds like a habit or repeated action, not one single event.

That comes mainly from suelo, which expresses what someone usually does. So the idea is:

• During October and November, this is something I usually do.

If you wanted a one-time action, you would normally use a different verb form, not soler.