A たら B means if the condition A is met, the situation B will be realized accordingly.

いえ　に　かえったら　テレビ　を　みます。

When I go home, I will watch the TV.

おおさか　に　いったら　たこやき　を　たべます。

When I go to Osaka, I will eat takoyaki.

A describes a possible condition:

あした　あめ　が　ふったら　おまつり　は　ちゅうしです。

If it rains tomorrow, the festival will be canceled.

その　みせ　の　りょうり　が　おいしかったら　また　いくかもしれません。

If the food at the restaurant is good, I may be going there again.

あした　おまつり　が　ちゅうしだったら　いえ　で　テレビ　を　みます。

If the festival is canceled tomorrow, I will watch the TV at home.

A describes a condition which is unreal or hypothetical:

わたし　が　あなただったら　その　さそい　は　ことわります。

If I were you, I would turn down the invitation.

おかね　が　たくさん　あったら　いえ　を　かいたいです。

If I had much money, I would want to buy a house.

References:

Plain Forms in Past Tense

https://anchor.fm/yuya-sato/episodes/Plain-Forms-in-Past-Tense-eoe8fp

Maybe～

https://anchor.fm/yuya-sato/episodes/Maybe-epcqd6

There is X

https://anchor.fm/yuya-sato/episodes/There-is-X-en68s2

I want to do something

https://anchor.fm/yuya-sato/episodes/I-want-to-do-something-eod5r2

Instagram:

https://www.instagram.com/yuyaman1986