I'd like to remove the Search box in the header.

This will remove the search box from the header in the Spring Loaded theme:

#header .search-bar {
	display: none;
}

It also could be combined with the other rules so you'd just have one block like this:

.page .post-date,
.page .metadata,
.page .category,
#header .search-bar {
	display: none;
}

I want to remove the "posted by" with my name, date, time under the post.

I see you've figured this out using the following custom CSS:

.page .post-date {
	display: none;
}
.page .metadata {
	display: none;
}
.page .category {
	display: none;
}

Note that you can combine that into one rule, check it out:

.page .post-date,
.page .metadata,
.page .category {
	display: none;
}

I'm rebuilding a friend's site and want to remove the "posted by" with my name, date, time under the post; and I'd like to remove the Search box in the header.

I've tried some things customizing the CSS (I've paid for the upgrade) and I'm lost. Help!?!? (please!?!?)