Add-Type –Path (Resolve-Path "C:Program FilesCommon FilesMicrosoft SharedWeb Server Extensions16ISAPIMicrosoft.SharePoint.Client.dll")
Add-Type –Path (Resolve-Path "C:Program FilesCommon FilesMicrosoft SharedWeb Server Extensions16ISAPIMicrosoft.SharePoint.Client.Runtime.dll")

$UserName = "lee@xxx.onmicrosoft.com"
$Password = Read-Host -Prompt "Enter password" -AsSecureString
$Url = "https://xxx.sharepoint.com/sites/sts"


#$Context = Get-SPOContext -Url $Url -UserName $UserName -Password $Password
#$items = Get-ListItems -Context $Context -ListTitle "EmployeeInfo"

$spoContext = Get-SPOContext -Url $Url -UserName $UserName -Password $Password
$listTitle = "EmployeeInfo"

#$password = Read-Host -Prompt "Enter password" -AsSecureString
#$credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials("M.okoro-ogbobe@shell.com", $password)

$web = $spoContext.Web

$List = $web.Lists.GetByTitle($listTitle)
$a = [Microsoft.SharePoint.Client.CamlQuery]::CreateAllItemsQuery()
$items = $List.GetItems( $a )

$spoContext.Load($web)
$spoContext.Load($items)
#execute query
$spoContext.ExecuteQuery()

Function Get-SPOContext([string]$Url,[string]$UserName,$Password)
{
    write-host Get-SPOContext
    #$SecurePassword = $Password | ConvertTo-SecureString -AsPlainText -Force
    $Context = New-Object Microsoft.SharePoint.Client.ClientContext($Url)
    $Context.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName, $Password) #SecurePassword
    return $Context
}

Function Get-ListItems([Microsoft.SharePoint.Client.ClientContext]$Context, [String]$ListTitle) {
    write-host Get-ListItems
    $list = $Context.Web.Lists.GetByTitle($listTitle)
    $qry = [Microsoft.SharePoint.Client.CamlQuery]::CreateAllItemsQuery(13,'ID','Created','Modified','Title')
    $items = $list.GetItems($qry)
    $Context.Load($list)
    $Context.Load($items)
    $Context.ExecuteQuery()
    return $items
}