The Spanish word for a/an is ‘un‘ for Spanish masculine nouns and una for Spanish feminine nouns.
Examples;

Todos deberian tener un pasaporte (masc’) = everyone should have a passport.
Por aquí hay sola una habitación libra = there is only one room vacant here.

Note, that Spanish does not use the equivalent of English ‘a’ when you indicate [...]

The use of ‘por’ and ‘para’, both meaning ‘for’ or ‘by’, can be a bit confusing at first.
The difference is that;

‘por’ looks back to the origins of, or the root causes of  the circumstances;
‘para’ looks forward to the result, aim or destination of the  the circumstances.

Spanish ‘Por’ is used to express, or used with;

Cause, reason, [...]

The Spanish prepositions — ‘a’ (to), and ‘de’ (of), when used in conjunction with a Spanish noun, precede the articles (el),(masc’) and (la) (fem’).
When these Spanish prepositions come before the masculine (el), ( singular), there is a contraction and fusion of these two.
Therefore; (a + el)  =  al, and (de + el)  =  del.
Single, masculine [...]

The Spanish preposition ‘desde’ can be used;

With time and duration, (tiempo y duración);
–viene en tren desde Zaragoza = he/she is coming from Zaragoza by train.
–Este quadro está desde1800 = this painting is from the 1800’s.

The Spanish preposition ‘con’ can be used ;

With company, (compania);
– me quedo en casa con todos los demas – I’m staying [...]

Gender is Spain - EL, LA and LO
All nouns in Spanish are either masculine or feminine.
They take the article “el” and “la” respectfully, and they are placed in front of the noun.
The Spanish don’t have neutral nouns.
–but there is a neutral form of the article. i.e. (’lo’), ( the).
It is used before an adjective to [...]

An adjectives is used to describe the noun, be it an article or a person.
In English the adjective is placed before the noun,
In Spanish, more often than not, they are placed after the noun.
Adjectives must show agreement of gender (masculine, feminine) and  number (singular or plural) with the person [...]

Two exceptions to the order (i.e. after, or before) are;  malo  (bad), and (bueno) good.
When malo or bueno are placed before the noun they change to mal and buen.
Examples are;
(1) una pelicula mala, or, una mala pelicula. ( a  good film).
(2) un tiempo malo, or,  un mal tiempo. ( a bad time).
(3) una buena niña, [...]

There are REFLEXIVE verbs in all the three verb groups (-er, -ar & -ir).
They have se added to the end of the INFINIIVE.
They are used in the verbs which describe the doing of the action to oneself,
e.g. To wash = LAVAR
To wash oneself = LAVARSE
The conjunction is;
I wash myself — me lavo
you wash yourself — te lavas
we [...]

Those ending in IR.   e.g.     To receive       –   RECIBIR         take off the ending IR.
I receive          –     recibo
you buy (sin’)   –     recibes
he, she buys     –     recibe
we buy             –     recibimos
you buy (pl’)    –     recibís
they buy           –    reciben
More Learning Spanish…
Spanish -ar verbs

Spanish -er verbs

Spanish Gender

Spanish Verbs

Spanish Reflexive verbs

Those ending in ER,    e.g.    To sell            –    VENDER,      take off the ending ER.
I sell                 –    vendo
you sell (sin’)   –    vendes
he, she, it sells –    vende
we sell             –    vendemos
you sell (pl’)    –    vendéis
they sell           –    venden
More Learning Spanish…
Spanish -ir verbs

Spanish Adjectives (exceptions in location)

Spanish -ar verbs

Spanish Gender

Spanish Verbs